Version 4 SHEET 1 4772 2908 WIRE 400 -1360 256 -1360 WIRE 544 -1360 400 -1360 WIRE 256 -1344 256 -1360 WIRE 544 -1344 544 -1360 WIRE 16 -1248 -48 -1248 WIRE 912 -1248 880 -1248 WIRE 1056 -1248 992 -1248 WIRE 544 -1216 544 -1264 WIRE -48 -1200 -48 -1248 WIRE 256 -1168 256 -1264 WIRE 432 -1168 256 -1168 WIRE 480 -1168 432 -1168 WIRE 880 -1152 880 -1248 WIRE 432 -1072 432 -1168 WIRE 448 -1072 432 -1072 WIRE 544 -1072 544 -1120 WIRE 544 -1072 512 -1072 WIRE 704 -1072 544 -1072 WIRE 832 -1072 784 -1072 WIRE 544 -1056 544 -1072 WIRE 256 -1040 256 -1168 WIRE -80 -992 -128 -992 WIRE 32 -992 0 -992 WIRE 112 -992 32 -992 WIRE 192 -992 112 -992 WIRE 32 -944 32 -992 WIRE 112 -944 112 -992 WIRE 256 -912 256 -944 WIRE 400 -912 256 -912 WIRE 416 -912 400 -912 WIRE 544 -912 496 -912 WIRE 880 -912 880 -1056 WIRE 880 -912 544 -912 WIRE 992 -912 880 -912 WIRE 1024 -912 992 -912 WIRE 1120 -912 1024 -912 WIRE 256 -896 256 -912 WIRE 880 -880 880 -912 WIRE 400 -848 400 -912 WIRE 464 -848 400 -848 WIRE 544 -848 544 -912 WIRE 544 -848 528 -848 WIRE -128 -832 -128 -992 WIRE 400 -832 400 -848 WIRE 1120 -832 1120 -912 WIRE 32 -784 32 -880 WIRE 112 -784 112 -864 WIRE 112 -784 32 -784 WIRE 160 -784 112 -784 WIRE 256 -784 256 -816 WIRE 320 -784 256 -784 WIRE 880 -784 880 -800 WIRE 880 -784 832 -784 WIRE 880 -768 880 -784 WIRE 256 -752 256 -784 WIRE 400 -736 400 -752 WIRE 464 -736 400 -736 WIRE 544 -736 528 -736 WIRE 32 -704 32 -784 WIRE 112 -704 112 -784 WIRE 544 -672 544 -736 WIRE 880 -672 880 -688 WIRE 880 -672 544 -672 WIRE 992 -672 880 -672 WIRE 1056 -672 1056 -1248 WIRE 1056 -672 992 -672 WIRE 1120 -672 1120 -752 WIRE 1120 -672 1056 -672 WIRE 256 -656 256 -672 WIRE 400 -656 400 -736 WIRE 400 -656 256 -656 WIRE 416 -656 400 -656 WIRE 544 -656 544 -672 WIRE 544 -656 496 -656 WIRE 256 -624 256 -656 WIRE -128 -576 -128 -752 WIRE -80 -576 -128 -576 WIRE 32 -576 32 -640 WIRE 32 -576 0 -576 WIRE 112 -576 112 -624 WIRE 112 -576 32 -576 WIRE 192 -576 112 -576 WIRE 880 -512 880 -672 WIRE 448 -496 432 -496 WIRE 544 -496 544 -512 WIRE 544 -496 512 -496 WIRE 704 -496 544 -496 WIRE 832 -496 784 -496 WIRE 544 -448 544 -496 WIRE 256 -400 256 -528 WIRE 432 -400 432 -496 WIRE 432 -400 256 -400 WIRE 480 -400 432 -400 WIRE 256 -320 256 -400 WIRE 544 -320 544 -352 WIRE 880 -320 880 -416 WIRE 912 -320 880 -320 WIRE 1024 -320 1024 -912 WIRE 1024 -320 992 -320 WIRE -16 -304 -16 -336 WIRE 32 -304 -16 -304 WIRE 80 -304 80 -336 WIRE 80 -304 32 -304 WIRE 32 -288 32 -304 WIRE 256 -208 256 -240 WIRE 416 -208 256 -208 WIRE 544 -208 544 -240 WIRE 544 -208 416 -208 FLAG 992 -912 OUT1 FLAG 992 -672 OUT2 FLAG 832 -784 0 FLAG 32 -288 0 FLAG -16 -416 VP FLAG 80 -416 VN FLAG 160 -784 0 FLAG 400 -1360 VP FLAG 416 -208 VP FLAG -48 -1120 0 FLAG 16 -1248 out_diff FLAG 320 -784 VN FLAG 544 -976 VN FLAG 544 -592 VN SYMBOL pnp 480 -1120 M180 SYMATTR InstName Q1 SYMATTR Value BC560C SYMBOL res 528 -1072 R0 SYMATTR InstName R6 SYMATTR Value {RB} SYMBOL voltage 896 -1248 R270 WINDOW 123 0 0 Left 2 WINDOW 39 24 132 Left 2 SYMATTR InstName V2 SYMATTR Value 35 SYMBOL nmos 832 -1152 R0 WINDOW 3 65 4 Left 2 SYMATTR Value 20N20-Tjp SYMATTR InstName M3 SYMBOL res 800 -1088 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL res 1104 -848 R0 SYMATTR InstName R10 SYMATTR Value 8 SYMBOL res 864 -896 R0 SYMATTR InstName R7 SYMATTR Value 100 SYMBOL res 864 -784 R0 SYMATTR InstName R9 SYMATTR Value 100 SYMBOL res 96 -960 R0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res 16 -1008 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 100 SYMBOL pnp 480 -448 R0 SYMATTR InstName Q2 SYMATTR Value BC560C SYMBOL res 528 -496 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R14 SYMATTR Value {RB} SYMBOL voltage 896 -320 M90 WINDOW 123 0 0 Left 2 WINDOW 39 24 132 Left 2 SYMATTR InstName V1 SYMATTR Value 35 SYMBOL nmos 832 -416 M180 WINDOW 3 65 4 Left 2 SYMATTR Value 20N20-Tjp SYMATTR InstName M1 SYMBOL res 800 -480 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R15 SYMATTR Value 100 SYMBOL res 96 -608 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R21 SYMATTR Value 10k SYMBOL res 16 -560 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R22 SYMATTR Value 100 SYMBOL res 528 -1360 R0 SYMATTR InstName R2 SYMATTR Value 10 SYMBOL res 240 -1360 R0 SYMATTR InstName R4 SYMATTR Value 350 SYMBOL res 528 -336 R0 SYMATTR InstName R5 SYMATTR Value 10 SYMBOL res 240 -336 R0 SYMATTR InstName R12 SYMATTR Value 350 SYMBOL current 256 -896 R0 WINDOW 0 32 40 VTop 2 WINDOW 3 -32 40 VBottom 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value 2.4m SYMBOL current 256 -672 R180 WINDOW 0 32 40 VTop 2 WINDOW 3 -32 40 VBottom 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I2 SYMATTR Value 2.4m SYMBOL npn 192 -1040 R0 WINDOW 0 43 32 Left 2 WINDOW 3 52 57 Left 2 SYMATTR InstName Q5 SYMATTR Value bc550c SYMBOL voltage -16 -432 M0 WINDOW 123 0 0 Left 2 WINDOW 39 24 132 Left 2 WINDOW 0 33 121 Left 2 WINDOW 3 40 58 Left 2 SYMATTR InstName V3 SYMATTR Value 20 SYMBOL voltage 80 -320 M180 WINDOW 123 0 0 Left 2 WINDOW 39 24 132 Left 2 WINDOW 0 11 6 Left 2 WINDOW 3 39 58 Left 2 SYMATTR InstName V4 SYMATTR Value 20 SYMBOL npn 192 -528 M180 WINDOW 0 43 32 Left 2 WINDOW 3 52 57 Left 2 SYMATTR InstName Q6 SYMATTR Value bc550c SYMBOL res 384 -848 R0 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL res 512 -928 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 1k SYMBOL res 512 -672 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 1k SYMBOL bv -48 -1216 R0 SYMATTR InstName B1 SYMATTR Value V=V(OUT2)-V(OUT1) SYMBOL cap 528 -864 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 10p SYMBOL cap 528 -752 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 10p SYMBOL cap 512 -1088 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 22p SYMBOL cap 512 -512 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 22p SYMBOL cap 16 -944 R0 SYMATTR InstName C5 SYMATTR Value 100p SYMBOL cap 16 -704 R0 SYMATTR InstName C6 SYMATTR Value 100p SYMBOL voltage -128 -848 R0 WINDOW 3 -56 -19 Left 2 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value SINE(0 0.2 {Freq}) SYMATTR Value2 AC 1. SYMATTR InstName V6 TEXT 648 -960 Left 2 !.PARAM RB 7624 TEXT 1192 -1240 Left 2 !*20N20-Tjp VDMOS with subthreshold (c) Ian Hegglun 21 May 2015\n.model 20N20-Tjp VDMOS (Rg=30 Vto={0.155-1.6m*(Tjp-25)}\n+ Rs={0.12*(1+2.5m*(Tjp-25))} Kp={2.40/(1+7.4m*(Tjp-25))}\n+ Ksubthres={0.09*(1+1m*(Tjp-25))} Mtriode=0.3 Rd=0.16 Lambda=3m\n+ Cgdmax=200p Cgdmin=10p a=0.25 Cgs=1200p Cjo=2200p \n+ m=0.7 VJ=2.5 IS=8.0E-6 N=2.4 mfg=IH150521) TEXT 1200 -1016 Left 2 !* BC550C - created March 1, 2011 copyright Cordell Audio\n.MODEL BC550C npn\n+IS=45e-15 BF=689 VAF=162\n+IKF=0.09 ISE=4600e-15 NE=2 NF=0.9965\n+RB=167 RC=1 RE=0.04\n+CJE=18.7e-12 MJE=0.35 VJE=0.75\n+CJC=6.2e-12 MJC=0.25 VJC=0.4 FC=0.5\n+TF=595e-12 XTF=10 VTF=10 ITF=1\n+TR=10e-9 BR=12.2 IKR=0.34\n+EG=1.2 XTB=1.65 XTI=3 NC=0.996\n+NR=1.0 VAR=120 IRB=7e-5 RBM=1.1\n+XCJC=0.6 \n+ISC=5e-15 mfg=CA030111 TEXT 1200 -600 Left 2 !* BC560C - created March 2, 2011 copyright Cordell Audio\n.MODEL BC560C pnp\n+IS=60e-15 BF=900 VAF=160\n+IKF=0.10 ISE=70e-15 NE=1.42 NF=1\n+RB=170 RC=1.0 RE=0.05\n+CJE=19e-12 MJE=0.3 VJE=0.75\n+CJC=3.9e-12 MJC=0.3 VJC=0.75 FC=0.5\n+TF=600e-12 XTF=7 VTF=4 ITF=0.45\n+TR=10e-9 BR=3 IKR=0\n+EG=1.1 XTB=1.5 XTI=3 NC=2\n+ISC=0 mfg=CA030211 TEXT -592 -1376 Left 2 !.options plotwinsize=0\n.options method=gear\n.options numdgt=7\n.param Tjp=Temp\n.temp 40\n.param Freq=1k\n.param numcyc=10\n.param dlycyc=0\n.param FFT=32786\n.param simtime=(dlycyc+numcyc)/Freq\n.param dlytime=dlycyc/Freq\n.param numsampl=simtime/Freq/((simtime/numcyc)*FFT)\n.four {Freq} V(out_diff)\n.tran 0 {simtime} {dlytime} {numsampl}\n;ac dec 30 .01 1000meg\n;noise V(Vout) V3 dec 100 .1 1000meg\n;.op